66029163787 has 8 divisors (see below), whose sum is σ = 67296134880. Its totient is φ = 64762975680.

The previous prime is 66029163773. The next prime is 66029163799. The reversal of 66029163787 is 78736192066.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66029163787 - 2¹¹ = 66029161739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66029103787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24039 + ... + 364192.

It is an arithmetic number, because the mean of its divisors is an integer number (8412016860).

Almost surely, 2^66029163787 is an apocalyptic number.

66029163787 is a deficient number, since it is larger than the sum of its proper divisors (1266971093).

66029163787 is a wasteful number, since it uses less digits than its factorization.

66029163787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391493.

The product of its (nonzero) digits is 4572288, while the sum is 55.

The spelling of 66029163787 in words is "sixty-six billion, twenty-nine million, one hundred sixty-three thousand, seven hundred eighty-seven".